STUDIES IN NEOTROPICAL MALLOPHAGA—CARRIKER 291 
basally; in addition, the endomeral plate is of a decidedly different 
shape apically. In respect to the genital armature, the Mexican 
specimens are intermediate between the nominate form and the present 
race, latithorax. ‘The shape of the preantennal area in both sexes 
differs from both brevipes and mexicanus, the male being intermediate 
respecting curvature of frons, while in the female the frons is but 
slightly more circular than in the male, in marked contrast to both 
brevipes and mexicanus. The antennal bands are uniform in pig- 
mentation like brevipes. : 
I have recently taken a series of Kelloggia on Tinamus t. tao, which 
contains immature specimens. I find that these, as well as another 
specimen (also immature) from 7. tao weddelli, correspond very 
closely to H. latithoraw. There seems to be little doubt that this is 
a case parallel to that of Strongylocotes and Nirmocotes, and that 
K. latithoraw is the immature of A. brevipes latithoran. 
I believe also that the true host of Kelloggia latithorax was 
Tinamus s. serratus, and not Crypturellus nigroecapillus (=C. garleppt 
afinis), since both birds were taken at Chiniri, Bolivia, although on 
different dates, and that in some manner I am not able to explain, 
the type of latithorax became mixed with specimens from C. garleppi 
afinis. There is no absolute proof of this assertion, but I have up 
to the present time taken Helloggia only on the genus 7’inamus. 
Kéler asserts that H. latithorax is the young of Heptagoniodes, 
which I am positive is incorrect. Both Kelloggia and Heptagoniodes 
are found on 7?%namus tao, and the fact that he found a specimen of 
latithoraxw among Heptagoniodes does not prove that it is the young 
of that genus. I have taken it on two different individuals of Tinamus 
tao on which Heptagoniodes was absent but Kelloggia brevipes present, 
which would seem to be ample proof of my assertion. Measurements 
are given with those of X. 6. taoz. 
KELLOGGIA BREVIPES TAOI, new subspecies 
FIGURE 28, a—c 
Types.—Male and female, adults, from T2namus ¢. tao, collected 
by the author at Tierra Nueva, Sierra Perija, Colombia, July 19, 1941; 
in U.S. National Museum. 
Diagnosis—In the present race we have the length in both sexes, 
as well as the width of the abdomen in the male, about as in A. b. 
mexicanus, but in the female the abdomen is much narrower. The 
width of the frons is more or less the same in the sexes, the same as 
_ in the three previous races, but the length at the temples and occiput, 
as well as the width at the temples, is of decidedly different 
proportions. 
